Brake band



Jan. 15 1924. 1,480,717

W. L. FOURNIER BRAKE BAND Filed SED'C. 9. 1922 Patented Jan. l5, 1924.

UNITED STA TES PATENT oFFicE.

WILLIAM L. FOURNIER, F SEATTLE. WASHINGTON.

BRAKE BAND.

Application tiled September 9, 1922. Serial No. 587,108.

l0 use in connection with the service brakes of motor vehicles, and seeks, as one of its principal objects1 to provide a brake band-Whach will eliminate overheating and \vhe" rn"wear will be reduced to a minimum.

A further object of the inventionl is 'to provide a band which will dispense with the iusual band lininfr and wherein; in lieu of such ,a linin a urality of gripping rollers will be empioye.

And the invention has as a' still further object to provide a device wherein the rollers may be easily kept lubricated.

Other and incidental objects will appear hereinafter.

In the drawings:

Figure 1 is a side, elevation of my improved brake band shown in connection with `an ordinary brake drum, parts being broken awa and illustrated in section,

F1 ure 2 is a fragmentary rear elevation of t e device,

Figure 3 is an `enlarged sectional view on the line 3 3 of Figure l, looking in the direction of the arrows,

Figure 4 is a fragmentary sectional View on the line 4 4 of Figure 1 looking in the direction of the arrows, and

Figure 5 is a fragmentary section on the line 5-5 of Figure 1, looking in the direction of the' arrows.

Referring now more particularly to the drawings, it will be `seen that iy improved brake band is formed of companion upper and lower segmental sections A and ll, each comprising a pair of spaced arcuate side bars 10. Intel-posed between said side bars at the rear ends of the sections is a coupling block ll to which the bans are pivotally connected by pins l2 and rising from said block at its outer sido is a sleeve 13. The block 11 serves. of course, to space apart the side bars of each pair at their rear ends and interposed between the forward ends o f said pairs of bars arespacing blocks 14 and 15 respectively. 'Thi-,e blocks are secured in position by rivets or other suitable fastening devices 16 extending through the side bars 11nd rigidly connecting the bars of each pair at suitably spaced plants are cross pins 1T. Rising from the block l1 are spaced ears 1S and pivoted at one cud between said ears is an upstanding operating lever 19. Rising from the block 15 is a lug 20 and pivotally connected to said lever is a toggle .rod or link 21 extending freely through said lug. Threaded upon the rod .to co-.ict with the lug is a nut 22 and sur rounding the rod is a spring :23 acting to Spread the forward ends of the sections of the band, the nut 22 being adjustable for tensioning said spring.

Lying between the side bars of thc sections is a plurality of gripping rollers 24 provided at their ends, as shown in Figure .3, with trunnions 25 journaled through the' bars. These rollers are arranged relatively close together Aand project at the inner edfre of the side barsr the eripheral surfaces o? the rollers being pre erably knurled. Formed iu the outer edges of the side bars of the section A are, as particularly shown in Figures 2 and 5. longitudinally directed lubricant`channels :Z6 Vand leading from said channels through said bars to the trunnions of eachof the rollers upon said section are passa es 2T. Overlying the outer edges of the si( e bars of both of the sections and B are cover plates 28, the plate upon the section A closing the channels 26 lthroughout the major p ortion ot' their length. As shown in Figure 1, the plates 2S are pr vided at spaced points with depending lugs 25) lying flat against the outer faces of the side bars of the sections and extending through said lugs are screws 30 threaded iuto the side bars t'or detachably connecting the cover plates thereto` the plates serving to house the rollers 24. Connected to the outer edgesof the side. bars of the section A at a point midway belwccn the ends of said section is, as `shown in detail in Figure 5, a cross plate 31 having a passage 32 therein communicating with the channels .26 in said bars and mounted upon said plate to communicate with said passa re is an appropriate lubricant cup 33. Tins, lubricant introduced into-thc cup 3&3 will How throu h l UG the )assage Il. to the channels 2G when tie of the .seirtion B are. as shown in Figures Il and 4,? lubricant channelsiel closed by cover plaY es 35 secured to the inner edges of the luibricant will flow through the passages l :56 figli' lubricating the trunnions of the rollers ntpon the section ll. All of the rollers ruayihccordlngly be easily maintained lubri'- .-atef' liga Figure-l of the drawing, I have shown iny improved brake hand in connection',

with a conventional motor vehicle brake diiuin 41. As will he observed, the sect-ions otr-the band are formed to surround said dljum while the sleeve 13 on 'the block ll isiadapted to accommodate the usual stud or pfgist l2 for rigidly.supporting -the band in operative position. rl`he`rollers 2A will thus be sustained to coact with the drum 41 so that when the lever 19`is rocked forwardly bil; the usual mechanism, the band will be time drunrfor braking the vehicle.. ()n the "lthcr luuul when the pull uponthe lever ,feleased. the spring .53 will operate lo spread the sections of the band at their t'rec ends ,iso that thc rollers will he caused to release nl lthe drum. Larcordingly provide a brake band of particularly cflicient construction and since thc gripping rollers oll thc devire lare mounted lo freely revolve. wear will be reduced to a minimum. Y Jy Having thus described the invention. what is claimed as nen 1.

l. lii'ale hd `including companion pivoted rigid ctiones` and gripping rollers journalcd 4upou the vr-'ections'to conci with a. i" brake drum. 4

Q. A brake band infludine companion piroied sections. and gripping rollers journ- :ilcd upon the sections to' coach with a brake druni.V cach ol the sections being 'pro rpntracted and the. rollers'caused to grip vided with means lo distributing a lubri- 55` cant to the journals of the rollers.

3. A pbrake band including companion pivoted sections each having spaced Sfide bars, and'igripping rollers journaled upon said side bars to coact with a brake drum, t-

-theside bars being formed with means for' distributing a lubricant to the journals of therollers.

4. A brake band including companion` 4pivoted sections each having spaced sided` bars, and gripping rollers journaled upon said side bars to coactwith a brake drum, the side` bars being formed with llubricant channels having passages leading therefrom lo the journals of said rollers.

5. A brake hand including companion pvoted sections each having side bars, gripping rollers provided' at ,their ends With trunnions journaled in .said side bars, th side bars being formed with lubricant chan- '75 nels having passages leading therefrom t0 the trunnions of said rollers, and lubricant cups feeding said channels.

6. A brake band including companion pivoted sections each having side bars, grip- 80 ping rollers provided at their ends with trunnions journaled in said side 'bars` the" side bars being formed with-lubricant channels having passages leading therefrom to the trunnionslfof said rollers, and cover B5 plates 4overlying said hars housing"V the rollers. L v, i

T. A Vbrake band including` lcomparton pivotcd sections each having. side hars, gp ping rollers providedat `their ends witlrfgo truuuions journaled inA said side 'barsg'tho l side hars being forme-(l at certain of their edges with luhricant channels..having pas? sages leading therefrom to the trunnions-pf .said rollers. cover plates overlying said bars (J5 closing said channels1 cross plates extending between the. bars and provided with-pas' sages communicating with the channels, and lubricant cups carried by said cross plates to communicate with tlnl passages therein. 8. A brake hand including companion' pivoted rigid sections, gripping rollers jonrnaled upon the sections to (3o-act Wlth a brake drum, and cover plates carried by the, seetionshousilrig the rollers.

ln testiuuiny whereof I ffix mysignature.

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